What is the common mistake of choosing a dedicated server? Does size matter? Or the price is a matter. Basically, we put them into 2 categories; the value and the performance.
From my past experience, customers are looking at the disk size and the RAM. Yes, the more the merrier but this most time doesn’t help in performing but larger in quantity. For me. I will go with performance than value.
A 2.6Ghz CPU A if different to 2.6Ghz CPU B. CPU B have the same speed but it is the later generation consume 30 watts while CPU A use 60 watts. It meaB performs better and consumes power lesser.
Next, we come to storage, we have hard drives, SSDs and NVMe now. Even the Hard Drives are different. The slower one spins at 5400rpm, follow by 7200rpm, 10,000rpm and 15,000rpm. The spin speeds give you better read and write performance. SSD reads at about 500Mb per second and NVMe is 2000MB per second. Hard Drives, the most common is 7200rpm gives you 150Mb.
So, today you got a big hard drive which means you can store more but the server can only host 2 websites as compared to those with SSD 3 time more for the same website loading speed.
For a dedicated server, the priority should be the power, the performance unless you use it for files archiving and you need the pace. A website with images probably less than 10GB if you have a 6TB server, I will guess you used it for archiving.
On the other hand, big hard drives like 4TB are common now, who sells you 1 or 2 TB drives. Most probably, they are old stock if they do. The spin speed is still important if you stick with the hard drives., otherwise SSD at least.